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(uxnasm) Catch buffer overflows

This commit is contained in:
Devine Lu Linvega 2024-03-28 12:08:10 -07:00
parent 8d06f3e1b9
commit 84cc003dec
1 changed files with 3 additions and 4 deletions
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7
src/uxnasm.c
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@ -177,7 +177,7 @@ makemacro(char *name, FILE *f, Context *ctx)
{ {
char c; char c;
Item *m; Item *m;
if(macro_len == 0x100) return error_asm("Macros limit exceeded"); if(macro_len >= 0x100) return error_asm("Macros limit exceeded");
if(isinvalid(name)) return error_asm("Macro is invalid"); if(isinvalid(name)) return error_asm("Macro is invalid");
if(findmacro(name)) return error_asm("Macro is duplicate"); if(findmacro(name)) return error_asm("Macro is duplicate");
m = &macros[macro_len++]; m = &macros[macro_len++];
@ -203,7 +203,7 @@ makelabel(char *name, int setscope, Context *ctx)
Item *l; Item *l;
if(name[0] == '&') if(name[0] == '&')
name = makesublabel(name + 1); name = makesublabel(name + 1);
if(labels_len == 0x400) return error_asm("Labels limit exceeded"); if(labels_len >= 0x400) return error_asm("Labels limit exceeded");
if(isinvalid(name)) return error_asm("Label is invalid"); if(isinvalid(name)) return error_asm("Label is invalid");
if(findlabel(name)) return error_asm("Label is duplicate"); if(findlabel(name)) return error_asm("Label is duplicate");
l = &labels[labels_len++]; l = &labels[labels_len++];
@ -223,8 +223,7 @@ static int
makeref(char *label, char rune, Uint16 addr) makeref(char *label, char rune, Uint16 addr)
{ {
Item *r; Item *r;
if(refs_len >= 0x1000) if(refs_len >= 0x1000) return error_top("References limit exceeded", label);
return error_top("References limit exceeded", label);
r = &refs[refs_len++]; r = &refs[refs_len++];
if(label[0] == '{') { if(label[0] == '{') {
lambda_stack[lambda_ptr++] = lambda_len; lambda_stack[lambda_ptr++] = lambda_len;